component
MAX490EESA+T
Public Made by Adomby adom
Analog Devices Inc Maxim Integrated RS-485 / RS-422 ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMAX490EESA+T
Analog Devices Inc Maxim Integrated · RS-485 / RS-422 ICs · SOIC-8
MAX490EESA+T from Analog Devices Inc Maxim Integrated, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VCC | power_in | Positive supply; 4.75V ≤ VCC ≤ 5.25V; bypass to GND with 0.1µF capacitor. |
| 2 | RO | output | Receiver output; logic high when A − B > +200mV, logic low when A − B < −200mV; VOH ≥ 3.5V at IO = −4mA, VOL ≤ 0.4V at IO = 4mA. |
| 3 | DI | input | Driver data input; VIH ≥ 2.0V, VIL ≤ 0.8V; high forces Y high and Z low, low forces Y low and Z high; input current ±2µA. |
| 4 | GND | power_in | Ground; 0V reference for supply and all signals. |
| 5 | Y | output | Noninverting RS-485/RS-422 driver output; differential output ≥ 1.5V into 27Ω or 50Ω load; output voltage range −8V to +12.5V; ±15kV ESD-protected (Human Body Model); thermal shutdown forces high-impedance if die temperature rises excessively. |
| 6 | Z | output | Inverting RS-485/RS-422 driver output; complements Y; differential output ≥ 1.5V into 27Ω or 50Ω load; output voltage range −8V to +12.5V; ±15kV ESD-protected (Human Body Model). |
| 7 | B | input | Inverting RS-422 receiver input (full-duplex, receive-only); accepts −8V to +12.5V common-mode range; differential threshold ±200mV with 70mV hysteresis; input resistance 12kΩ (standard unit load); ±15kV ESD-protected (Human Body Model). |
| 8 | A | input | Noninverting RS-422 receiver input (full-duplex, receive-only); accepts −8V to +12.5V common-mode range; differential threshold ±200mV with 70mV hysteresis; fail-safe guarantees logic-high RO output when input is open circuit; ±15kV ESD-protected (Human Body Model). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | SOIC-8 |
| Category | Interface |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
MAX490EESA+T - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
max490eesa-t-etched.step/max490eesa-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max490eesa-t.step/max490eesa-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (16 pp, sha256
ed04e40e3b3271b1, retrieved 2026-09-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).